Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MDD callsign genealogy
Currently held by Davis, Michael D
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K4MDD's current licensee, walking backwards.
- Davis, Michael DVAgranted 2006-12-11cancelled 2007-06-26
Successor callsigns
Callsigns held now by people who previously held K4MDD.
No current licensee on record previously held this callsign.